For Samsung, the choice was plain as “limited consumer demand for 3D, and the small amount of content being produced in this format” meant there was little point to dumping money on development. Philips went as far as to say that 3D is dead since there is no 3D content and no one really wants 3D. LG and Sony have both reduced the number of 3D capable units in their lineups and only Panasonic has any real 3D TV presence to speak of.
Personally, I see little need for 3D content other than for a few niche segments. Until passive 3D takes off and becomes relatively cheap, it’s hard to see 3D’s fortunes turning around. This is even more true for the PC space as the focus shifts to VR and its various forms like augmented VR. Unlike my thoughts when 3D first appeared, I expect VR to be much more successful despite it’s higher entry cost as it actually adds more value. It will be interesting to see if 3D will continue to limp along or will something change its fortunes in the near future.